Professor Saisen once worked at Touto University and led Sakaki through his three-month internship which ended over his decision to lead almost the entire medical program over to Comerica. The professor's contempt for Sakaki as a person is only amplified by Sakaki's psychometry and a hatred for all espers. If not for Kaoru's seasickness and his spleen rupturing, there would have been a mortal confrontation at sea. Even as Sakaki surgically repairs his spleen (along with Shiho's fallacious belief that her Level 7 psychometry does away with the necessity of actually appraising a situation at proximity to learn the whole story), it is hard to say if the Professor has matured enough to understand that success is about engagement rather than simply education.
(Source: Wikipedia)